Magnetic fastener



FIG. 1 is a bottom perspective view of the magnetic fastener;

FIG. 2 is a top perspective view of the design;

FIG. 3 is a bottom plan view of the design;

FIG. 4 is a side elevation taken from the left in FIG. 3;

FIG. 5 is a top plan view of the design;

FIG. 6 is an end elevation taken from the top of FIG. 5;

FIG. 7 is a extended bottom perspective view of the design; and,

FIG. 8 is a extended top perspective view of the design. 

CLAIM The ornamental design for a magnetic fastener, as shown and described. 